ADTRAN Tracer TRACER 2 x E1 Guide de l'utilisateur Page 225

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Multi Protocol Test Set 213
13 T1-A and T1-B Tests
T1-A and T1-B are fully independent DS1 tests that provides a means for
testing two circuits at once. It allows dual independent tests capability to
insert and detect alarms/errors.
Setup Configuration
The Setup page allows to set up the T1-A/T1-B test parameters as
explained below.
Press , select DSn/PDH, T1-A or T1-B, and Setup.
³ Mode: Select the test mode.
Choices are Monitor, Term-DSX,
Bridged (T1-A only), CSU/NIU
Emulation, Frac-T1, Ter m-7.5,
Ter m-15, and Term-22.5. The
default setting is Monitor.
Note: The AXS-805/855 transmitter is off in
Monitor and Bridged modes.
Monitor: Select this mode if monitoring at a DSX (–20 dB) point or at a
monitor port on a Smart jack (NIU).
Ter m-DSX: Select this mode to perform intrusive testing, for e.g. send
loopbacks, straight away BERT tests, etc.
Bridged: Available with the T1-A interface only. Select this mode for
monitoring at a high impedance point. The AXS-805/855 receiver is
placed in a >1 k ohm high impedance state for monitoring RX or TX
lines.
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